Paper-feeding device



T. DANHEISER PAPER FEEDING DEVICE April 22. 1924. 1,491,585

Filed Sept. 22 1922 2 Sheets Sheet 1 April 22, 1924.-

r. DANHEISER I PAPER FEEDING DEVICE 1922 2 Sheets-Sheet 2 Filed Sept. 22.

m r H| 5 avwzwcoz Patented Apr. 22, l92 i.

UNETED STATES EAL585 FATENT @FFEQE.

THEODORE DANHEISER, O1 NEV] YORK, N. YQASSIGNOR TD THE BECK D'UPLICATOR COMPANY, A CORPQRATION OF NEW YORK.

PAPER-FEEDING DEVICE.

Application filed September 22, 1922.

To (.LZZ whom may concern Be it known that I, Trmononn DANHEISER, a citizen of the United States, and a resident of the borough of Manhattan, city and State of N w York, have invented certain new and useful Improvements in Paper-Feeding Devices, of which the following is a specification.

The invention relates to paper feeding devires, and has for one of its principal objects to provide simple and comparatively cheap means whereby the rapid handling of sheets of paper and the feeding of the same to printing mechanism or the like is facilitated.

The invention consists in the novel construction, arrangement and combination of various devices, elements and parts, as hereinafter set forth in the claims hereof, one embodiment of the same being illustrated in the accompanying drawings and described in this specification.

In the accompanying drawings, Fig. 1 is a side elevation of a device constructed according to one embodiment of my invention;

Fig. 2 is a plan view; and

Fig. 3 is a section along the line 33 of Fig. 2.

I have selected-for illustration in the accompanying drawings and description in this specification, one particular embodiment of the invention which is adapted for use in connection with an apparatus known as a duplicator, which is provided with an adhesive duplicating surface upon which negative or reversed impressions of matter to be copied are impressed, and from which positive impressions may be taken upon sheets of paper fed thereto by the devices constituting my invention. In carrying my invention into effect in this embodiment thereof, 1 provide a main frame structure of any construction suitable for the purpose, only the upper portion of which is shown, such as may comprise side members 11, suitably connected together so as to make a frame of sufficiently rigid construction. In the side members 11, below the portion shown, are ournaled spools upon which an adhesive duplicating film 14: is adapted to be wound. The duplicating film 14c passes upward from one spool, over a bed secured between the members 11., and down to the other spool. rollers 15 adjacent the ends of the bed being provided for the purpose of Serial No. 589,785

preventing the film from scraping against the said ends when the spools are rotated. Suitable means for rotating the spools and means for either holding the same against rotation or permitting such rotation, are provided; which means may consist of cranks operatively connected to said spools, ratchets, pawls adapted to engage with said ratchets, and devices adapted when desired to hold said pawls out of operation, all of which means are now known in the art and are no part of the present invention and need not be described in detail. It is thus possible to bring any portion of the duplicating film wound upon the spools into operative position upon the bed, and to stretch the same tightly thereover.

The particular means employed in my invention for journaling the spools at each end, and for operatively connecting the same at one end to their respective cranks, form no part of the present invention and are not shown or described.

In connection with the lower portion of the structure above described, I provide a paper-support or table member having sides 21, a front end 22, and a bottom 23 covering the greater part of the area, but having an open portion at one end. This table is provided at each side near the rear end with downwardly extending lugs 24, the lower ends of said lugs being rigidly secured to a rod 25 journaled in the side members 11. A spring 26 is provided. which tends to normally raise the table into its elevated position, as shown in dotted lines in the drawings. This spring is coiled around the rod 25, one end of the spring being passed through a perforation 4:0 and the other end of said spring being. piaced so as to bear down upon a stop consisting of a bar ll extending transversely of the frame. A hook 2'? is also provided on one side of the other end of the machine, to secure the table in its lowered position when the apparatus is not in use, by engaging with a stud 28 on the table. I

Slidably mounted upon the table is a paper stop 30 adapted to bear against the ends of sheets ofpaper laid upon said table, and similar stops 31 adapted to bear against the sides of such sheets. All of these stops are adjustable, whereby the table is adapted to receive sheets of paper of various different sizes.

Near the front end of the table and projecting over the open space left in the same, is a bar 35. This bar is supported at its ends by arms 36, which are pivotally secured to the sides of the table, so that the bar is adapted to swing around through an arc of slightly more than ninety degrees, the same being shown in Fig. l in its upright position in full lines and in its lowered position in dotted lines. At approximately the middle of the bar 35 is a plate 37. Attached to the floor of the table member, and projecting forward across the opening therein, are spring members 38 which normally project under the bar and tend to resiliently support the same when it is in its lowered position (see particularly Fig. 3). The bar 35 is preferably semi-cylindrical or rounded on the side that comes in contact with the paper upon which it is depressed as herein after explained.

The operation of the above described embodiment of my invention is as follows: Upon the table is placed, face downward a sheet of paper bearing the matter which it is desired to duplicate or copy, the same being written or printed with so-called hectographing ink, and upon this is placed any desired number of sheets of blank paper upon which it is desired to copy the matter transferred from the original to the duplieating medium, so that one end of each of said sheets of paper shall rest against the lower end of the table and the side edges of said sheets shall rest against the stops 3]. and the other end of said sheets shall rest a ainst the stop 30, it being understood that tae stops 30 and 31 are adjusted so as to permit the sheets of paper to easily lie between them. If it is desired to use paper of the same size as the table, the adjustable stops 30 and 31 may of course be removed. It will be understood that the ends of the sheets of paper lie over the opening in the floor of the table member, and that after the paper is placed in position the bar is swung backward into position over the ends of the sheets of paper. The original and the blank sheets of paper being thus in place upon the table, the pile of paper may if desired be steadied by placing the hand upon the same, although ordinarily this will notbe necessary. It is to be understood that the table is normally in its lowered position as shown in Fig. 1. The bar 35 is then depressed, by pressure of the hand on the plate 37, the effect of this being to bring a portion of the lowest sheet of paperin the pile, that is, in this case, the original matter to be duplicated, into contact with the adhesive duplicating medium, to which it will adhere. The table being then swung upward, this sheet of paper will be dragged out from under the pile. The table being then maintained by the spring 26 in a raised position, pressure may be applied to the sheet of paper then on the duplicating medium, in order to transfer an impression of the matter written upon the same, to the said medium. The sheet of paper containing the original matter is then stripped off, the table caused to assume its lowered position, and the operation repeated with the blank sheets of paper until as many copies as are desired have been made, whereupon a new portion of the duplicating medium may be brought into play, so that when desired a new impression may be transferred thereto and copies made from the new impression in the manner described.

I do not limit myself to the particular construction hereinabove described, as it is obvious that various modifications may be made without departing from the spirit and scope of the invention. For instance, it is not essential to the invention that the bar 35 should be separate from the spring member 38, as it might, though perhaps without so great etliciency, be mounted upon the ends of said spring members, the pivotally supported arms 66 being dispensed with. l have shown the bar as of semi-cylindrical shape, having found such a form to be most satisfactory in practice, but it is obvious that any other shape could be employed.

It will also be obvious that, while I have described the invention in connection with a duplicator, and with a duplicator of a specilie type, namely, one provided with an adhesive duplicating film mounted on rolls and adapted to be wound and rewound thereon and therefrom, that the invention is by no means limited to use with such a mechanism. It would be entirely possible to use the invention on duplicators of other types, as for instance what is known as the clay duplicator, it being only necessary to provide, below the portions of the sheets of paper which lie over the opening in the table, adhesive means with which such portions of the sheets of paper may be brought in contact and to which they may adhere. Furthermore, the invention is not limited to duplicator-s broadly considered, but I wish to be understood as claiming as my invention the use of the mechanism set forth in the claims hereof, in connection with any other mechanism or apparatus whatever, whether eniploying an adhesive member or suction devices or other means.

One of the advantages of my invention is the greater rapidity of operation which is made possible by the use of the bar 35, preferably mounted upon the pivotal arms 36 and supported by the spring arms 38. In apparatus of the particular type above described, as heretofore employed, the paper has usually been depressed upon the adhesive duplicating medium by hand. As the hand ltll) obviously could not cover the entire Width of the paper, the result has been that the lower sheet of paper which was depressed upon the adhesive duplicating medium, would often adhere thereto in an imperfect manner and sometimes very unsatisfactorily. By the use of my improved device, the end of the lowest sheet is firmly depressed, and brought into contact with the adhesive duplicating medium across practically its whole width, and therefore when the table is swung upward, not only is the adhesion of the paper greater on account of the larger surface in contact, but also the liability to wrinkle or puckeras the table is swung upward and the lowest sheet allowed to drop upon the adhesive duplicating medium, is minimized. Other :ulvantages will be readily seen by those skilled in the art of using duplicators, and paper feeding devices generally.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1. In a paper feeding device, the combination with a supporting frame or base provided with apaperadherent member adapted to receive a sheet of paper fed thereon and to cause same to adhere thereto when a portion of said sheet of paper is brought in contact therewith; of a papersupporting member adapted to support a plurality of sheets of paper or the like, said paper-supporting member being pivotally mounted over said paper-adherent member and being provided with an opening in the bottom adapted to permit a portion of a sheet of paper held upon said paper-supporting member to be depressed so as to come in contact with said paperadherent member, and means located over said opening adapted to depress a portion of a sheet of paper on to said paper-adherent member, comprising a depressible devhe located over said opening: the portion of said device which is adapted to come in contact with said paper being rounded.

2. In a paper feeding device the combination with a supporting frame or base provided with a paper-adherent member adapted to receive a sheet of paper fed thereon and to cause same to adhere thereto when a portion of said sheet of paper is brought in contact therewith; of a papersupporting member adapted to support a plurality of sheets of paper or the like, said paper-supporting member being pivotally mounted over said paper-adherent member and being provided with an opening in the bottom adapted to permit a portion of a sheet of paper held upon said paper-supporting member to be depressed so as to come in contact with said paperadherent member, and means located over said opening adapted to depress a portion of a sheet of paper on to said paper-ading in the bottom adapted to permit a portion of a sheet of paper held upon said paper-sup-porting member tobe depressed so as to come in contact with said papera'dherent member, and means located over said opening adapted to depress a portion of a sheet of paper on to said paper-adherent member, comprising devices pivotally secured to said paper-supporting member extending over said opening, and means adapted to uphold said devices.

4. In a paper feeding device, the combination with a supporting frame or base provided with a paper-adherent member adapted to receive a sheet of paper fed thereon and to cause a sheet of paper to adhere thereto when a. portion of said sheet of paper is brought in contact therewith; of a paper-supporting member adapted to support a plurality of sheets of paper or the like, said papensupporting member being pivotally mounted over said paper-adherent member and being provided with an opening in the bottom adapted to permit a portion of a sheet of paper held upon said paper-supporting member to be depressed so as to come in contact with said paper-adherent member, means adapted to swing said pivotal paper-supporting member into an elevated position, means adapted to depress a portion of a sheet of paper on to said paper-adherent member, andmeans adapted tohold said paper-supporting member in its lowered position.

5. In a paper feeding device, the combination with a supporting frame or base provided with apaper-adherent member adapted to receive a sheet of paper fed thereon and to cause a sheet of paper to adhere thereto when a portion of said sheet of paper is brought in contact therewith; of a paper-supporting member adapted to support a plurality of sheets of paper or the like, said paper-supporting member being pivo-tally mounted over said paper-adherent member and being provided with an opening in the bottom adapted to permit a portion of a sheet of paper held upon said papersupporting member to be depressed so as to come in contact with said paper-adherent member, and means adapted to lock said paiper supporting member in its lowered position.

In a paper feeding device, the combination with a supporting frame or base provided with a member adapted to receive a sheet of paper fed thereon; of a papersupporting member adapted to support a plurality of sheets of paper or the like, said paper-suppo-rting member being pivotally mounted over said paper-receiving member and being provided with an opening in the bottom adapted to permit a portion of a sheet of paper held upon said paper-supporting member to be depressed so as to come in rontac-t with said paper-receiving member, and means adapted to lock said paper-s11pporting member in its lowered position.

in witness whereof I have hereunto signed my name this 11 day of September, 1922.

THEODORE DANHEISER. 

